Combustion Characteristic and Mechanism of a Mixture Working Fluid C3H8/CO2
文献类型：期刊论文
| 作者 | Shi Weixiu3; Pan LS(潘利生)1,2 ; Jin Suyi3; Dong YH(董跃华)1,2; Li T(李腾)2; Zhao J(赵京)2; Wei XL(魏小林)1,2; Li T(李腾); Wei XL(魏小林); Pan LS(潘利生)
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| 刊名 | JOURNAL OF THERMAL SCIENCE
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| 出版日期 | 2021-08-26 |
| 页码 | 12 |
| 关键词 | CO2-based mixture flammability laminar flame speed flammable critical mixing ratio transcritical power cycle |
| ISSN号 | 1003-2169 |
| DOI | 10.1007/s11630-021-1505-5 |
| 通讯作者 | Pan Lisheng(panlisheng@imech.ac.cn) ; Li Teng(liteng@imech.ac.cn) |
| 英文摘要 | In the CO2 transcritical power cycle, conventional cooling water can hardly condense subcritical CO2 because its critical temperature is as low as 30.98 degrees C. In order to avoid this condensing problem, CO2-based mixtures have been proposed as working fluids for transcritical power cycle. They can raise the critical temperature by mixing a little C3H8 as the secondary component to CO2. However, the flammability of the mixture may limit its application. This article investigated laminar flame speed of C3H8/CO2 which represents the mixture's combustion characteristic by a so-called heat flux method and studied the inhibition mechanism of CO2 on the combustion based on the Premixed Laminar Flame-Speed Calculation reactor of Chemkin-Pro. The experimental results showed that the laminar flame speed shows a peak value with changing the equivalence ratio and accelerates with raising the mole fraction of the organic gas. Additionally, a slight upwards trend was observed for the corresponding equivalence ratio of the peaks. The flammable range for the equivalence ratio extended with the mole fraction of C3H8 increasing. With the mole fraction of C3H8 of 0.15, the maximum laminar flame speed was 12.8 cm/s, 31.7% of that of the pure C3H8. The flammable range was from 0.41 to 1.33, decreasing by 23.3% compared with that of C3H8. A flammable critical mixing ratio was also found as 0.08/0.92 for C3H8/CO2 at the normal condition. By simulating, it was found that the most key free radical and elementary reaction which determine the inhibition of CO2 on the combustion are OH and H+O-2=O+OH, respectively. |
| 分类号 | 二类 |
| WOS关键词 | ORGANIC RANKINE CYCLES ; LAMINAR BURNING CHARACTERISTICS ; TRANSCRITICAL POWER CYCLE ; AIR ; CO2 ; PERFORMANCE ; SELECTION ; FLAMMABILITY ; VELOCITY ; DILUTION |
| 资助项目 | National Natural Science Foundation of China[51776215] ; National Natural Science Foundation of China[51736010] |
| WOS研究方向 | Thermodynamics ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000690507600001 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Pan Lisheng ; Li Teng |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/87377]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 3.Beijing Univ Civil Engn & Architecture, Beijing Engn Res Ctr Sustainable Energy & Bldg, Beijing 100044, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Shi Weixiu,Pan LS,Jin Suyi,et al. Combustion Characteristic and Mechanism of a Mixture Working Fluid C3H8/CO2[J]. JOURNAL OF THERMAL SCIENCE,2021:12. |
| APA | Shi Weixiu.,潘利生.,Jin Suyi.,董跃华.,李腾.,...&Dong YH.(2021).Combustion Characteristic and Mechanism of a Mixture Working Fluid C3H8/CO2.JOURNAL OF THERMAL SCIENCE,12. |
| MLA | Shi Weixiu,et al."Combustion Characteristic and Mechanism of a Mixture Working Fluid C3H8/CO2".JOURNAL OF THERMAL SCIENCE (2021):12. |
入库方式： OAI收割
来源：力学研究所
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